/**
* check reverse dependencies of an item to remove.
*
* Find all items having the given item as dependency, and remove them
*
* @param Item $item
* @param string $epId
*/
protected function _checkReverseDependencies(Item $item)
{
if (isset($this->circularReverseDependencyTracker[$item->getName()])) {
throw new ItemException('Circular reverse dependency! Cannot process the item ' . $item->getName(), $item, 4);
}
$this->circularReverseDependencyTracker[$item->getName()] = true;
foreach ($this->items as $revdepItemName => $revdepItem) {
$dependencies = $revdepItem->getDependencies();
if (!isset($dependencies[$item->getName()])) {
continue;
}
if ($revdepItem->getAction() == self::ACTION_INSTALL || $revdepItem->getAction() == self::ACTION_UPGRADE) {
throw new ItemException('Item ' . $revdepItemName . ' should be removed because of the removal of one of its dependencies, ' . $item->getName() . ', but it asked to be install/upgrade at the same time', $item, 5, $revdepItem);
}
if (isset($this->checkedItems[$revdepItemName])) {
continue;
}
if ($revdepItem->getAction() == self::ACTION_REMOVE) {
$this->_checkReverseDependencies($revdepItem);
$this->chain[] = $revdepItem;
} elseif ($revdepItem->getAction() == self::ACTION_NONE) {
if ($revdepItem->isInstalled()) {
$revdepItem->setAction(self::ACTION_REMOVE);
$this->_checkReverseDependencies($revdepItem);
$this->chain[] = $revdepItem;
}
}
}
$this->checkedItems[$item->getName()] = true;
unset($this->circularReverseDependencyTracker[$item->getName()]);
}